Guide for steam-hammers



(No Model.)

W. H. WOOD. GUIDE FOR STEAM HAMMERS.

Patented Apr. 9, 1895.

WZZZMZWL 49 Mom @24 4".

UNIT D STATES WILLIAM WOOD, OF

PATENT Orrrce.

MEDIA, PENNSYLVANIA.

GUIDE FOR STEAM-HAM MERS.

SPECIFICATION forming part of Letters Patent No. 537,333, dated April 9, 189 5. Application filed November 20,1894. Serial No. 529,403- (No model.)

To all whom it may concern:

Be it known that I,'WILLIAM H. WOOD, a citizen of the United States, and a resident of Media, in the county of Delaware and State of Pennsylvania, have invented certain new and useful Improvements in Guides for Steam- Hammers; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled inthe art to which it appertains to make and use the same, reference beinghadto the accompanying drawings, which form a part of this specification, and in which- Figure 1 is a perspective view of so much of a single standard steam-hammer as is necessary to illustrate my improvement. Fig. .2 is a transverse sectional view through the same, on line 00-11: in Fig. 1. Fig. 3 is a vertical sectional view through the middle of the standard, on line yy in Fig. 1. Fig. 4 is a cross section of one of my improved automatically adjustable guides; and Fig. 5 is a rear elevation of the same.

Like letters of reference designate corresponding parts in all the figures.

This invention has relation to steam hammers, and consists in an improved construction of the guides, which is applicable with equal facility and advantage to both single and double standard hammers. In the present instance, I have shown myimproved automatic guides as applied to a single standard hammer; but their application and adjustment to a double standard involves no departure from the construction hereinafter to be described, and will be readily understood by all persons familiar with the art to which my invention relates.

Referring to the accompany drawings, the reference-letter A designates the standard of a steam hammer, and B the vertically reciprocating hammer; the steam cylinder being shown at O and the anvil at D. The upper part of thestandard, which is recessed, as usual, to make room for the vertically reciprocating hammer, is cast with two outside hubs, E E, on each side, which are in vertical alignment with each other, and recessed on their inner sides, facing the hammer recess, to

form circular chambers or recesser, e e, which have central bores or apertures, f,bored through ,the outer wall of each hollow hub E, for the purpose hereinafter set forth.

7 Arranged within the recessed upper part of the standard, one on each side of the hammer, are the guides F, the shape of which is clearly illustrated in Figs. 2, at and 5 Each of these guides consists of a rectangular plate or casting, having a slightly raised or projecting central flange, F, on its back, which will fit into acorresponding and contiguous planed groove or depression f in the hammer recess of the standard A, (one on each side.) This guide is also provided with two cast projecting circular bosses, G G, which will fit snugly within the circular recesses e. e of the projecting hubs E. The parallel sides of each guide F are also planed off smooth so as to fit within its appropriate recess in the standard, so that the guides may have a limited forward and back movement or play in their respective side recesses.

The circular guide-bosses G do not fill out the hollow hubs within which they are inserted, but leave an open space back of each boss, into which is inserted astiff spiral spring H, the operation of which is to force or impel the guide out from its recess in the standard and up against the adjacent and impinging side of the hammer; but this outward or lateral play of the guide is limited and checked by a screw-threaded pin or belt I, the inner end. of which is screwed through the center of the boss G into the body of the guide, while its outer end, after passing centrally and loosely through the coiled spring H, and through the central aperture f in the hub, has placed upon it a spring-washer 1. and nut 3'. This nut is screwed up tightly against the washer; and in order to prevent it from jarring ofi, on account of the constant shaking and vibration to which the standard is subjected while the hammer is in operation, I prefer to fasten the nut j by any one of the well-known devices (or so-called nut-locks) for preventing nuts from jarring off, so that the nut will always be held effectually and permanently in place;

The opposite sides or faces of the movable, spring-actuated guides F F are grooved, as usual, to form two V-shaped ribs or projectoo tions, which fit into corresponding grooved ways in the adjacent sides of the hammer,

and thus serve to guide this true up-anddown on its strokes. By means of the rearwardly projecting bosses G, in combination with the recessed hubs on the sides of the standard, and the coiled springs H within said hubs, the guides on both sides are made sufficiently yielding, or have suificient give, to

accommodate or adjust themselves to any irregularity or unevenness of stroke in the working of the hammer. In other words, this spring adjustment virtually and practically gives the same advantages as a flexible pistonrod for the hammer, without any of its disadvantages. The vertical alignment of the hammer strokes will always be perfect, and

all lateral strain upon either the piston rod, 1 hammer, or frame is avoided by the lateral elasticity or yielding of the guides, which, as 1 before stated, will adjust themselves automatically to the lateral vibrations or deviations of the hammer, which always exist to a g er o lesser extent, and th .us avoid fracturing or breakage of the standard, as well as straining and breaking of the piston-rod.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States In a steam hammer, the combination with the reciprocating hammer and the frame or standard within which it works, formed with opposite vertical grooves, and with outwardly extending centrally apertured hubs on oppo- .Site Sides, of the guides F, provided with vertical flanges on their outer sides fitting in the grooves in said frames and with circular bosses fitting into said hubs, the bolts H passing through said hubs and engaging with the guides, the Washers and nuts on said bolts, and the coiled springs interposed between the said guides and the ends of the hubs, substantially as described.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two Witnesses- VVILLIAM II. WOOD.

Witnesses:

M. BROOKE WILLIAMSON, JOHN M. BRooMALL, 3d. 

